CN201663684U - Speaker - Google Patents

Abstract

The utility model provides a speaker, which comprises a magnetic circuit, a voice coil and a centering disk. The magnetic circuit comprises a magnetic gap. The voice coil comprises a voice coil outgoing line. The centering disk comprises an electric conduction circuit formed on the surface thereof. One end of the voice coil is accommodated in the magnetic gap, and other end thereof is fixed at the centering disk. The voice coil outgoing line is correspondingly and electrically connected with the electric conduction circuit of the centering disk. The voice coil and the centering disk of the speaker of the utility model are correspondingly in electric connection through the voice coil outgoing line and the electric conduction circuit, so the voice coil can be electrically connected with a drive circuit board of an outside speaker through the voice coil outgoing line and the electric conduction circuit of the centering disk, the speaker has compact overall structure, reasonably utilizes the space, is beneficial to realizing the light and thin miniaturization development of the speaker, has convenient overall manufacturing technology and assembly technology, and effectively solves the problem of current limit.

Description

speaker

technical field

The utility model relates to a loudspeaker.

Background technique

In order to adapt to the miniaturization and multi-function development of various audio equipment and information communication equipment, the corresponding requirements of the speakers used in such equipment tend to be more miniaturized, and the cooperation with other components around the speakers is more compact. Especially with the development of thinner and lighter mobile phones, the speakers used therein require not only miniaturization, but also high sound quality and stereo sound.

In order to adapt to the above-mentioned development trend, the industry adopts methods of reducing the volume of components or reducing the number of components to achieve the above-mentioned purpose. A speaker related to the present invention is shown in FIG. 1 . The speaker 1 includes a bracket 11 , a magnetic circuit system 13 , a voice coil 15 and a vibration system 17 . The bracket 11 cooperates with the vibrating system 17 to form a receiving space for receiving the magnetic circuit system 13 and the voice coil 15 .

The bracket 11 supports the magnetic circuit system 13 and the vibration system 17 .

The magnetic circuit system 13 is accommodated in the bracket 11 and is supported and fixed by the bracket 11 . The magnetic circuit system 13 includes an annular magnetic gap 131 .

The voice coil 15 includes a voice coil lead wire 151 . One end of the voice coil 15 is movably embedded in the magnetic gap 131 of the magnetic circuit system 13 , and it can move up and down relative to the magnetic gap 131 . The other end of the voice coil 15 is fixed to the vibrating system 17 by adhesive bonding, and vibrates synchronously with the vibrating system 17 . The lead wire 151 of the voice coil is a conductive wire, which realizes the electrical connection between the voice coil 15 and the driving circuit board (not shown) of the speaker 1 .

The vibration system 17 is a part forming the sound source of the speaker 1 .

When the speaker 1 is working, it receives the electro-acoustic signal from the driving circuit board and transmits it to the voice coil 15 through the voice coil lead wire 151 . The voice coil 15 is correspondingly induced to generate a magnetic field, which interacts with the magnetic field of the magnetic gap 131 to drive the voice coil 15 to move back and forth in the up and down direction, and drives the vibration system 17 to generate sound correspondingly and is received by the speaker 1 send.

In above-mentioned loudspeaker 1, it still has following defect:

First, the vibrating system 17 and the voice coil lead-out wire 151 are mutually independent elements, because when the vibrating system 17 vibrates, a certain vibration space is needed, and the voice coil lead-out wire 151 follows the voice coil at the same time. The movement of the coil 15 also requires a vibration space, therefore, sufficient space is required inside the speaker 1 to meet the vibration of the vibration system 17 and the voice coil lead-out wire 151 . However, this structure is not conducive to realizing the development trend of the overall thinner, lighter and smaller speaker 1 .

Secondly, since the vibration system 17 and the voice coil lead-out wire 151 are independent components, there are too many components for the speaker 1 as a whole, the overall structure is complicated, and the manufacturing process is complicated.

In addition, since the diameter of the lead wire 151 of the voice coil is thinner, in order to increase the power of the speaker 1, it is necessary to increase the line diameter of the lead wire 151, which will increase the gap value of the magnetic gap 131, thus Instead, it directly leads to a decrease in power.

Aiming at the above-mentioned technical problems that the overall structure of the loudspeaker 1 is not compact enough, not light enough to be light and small enough, numerous components, complex structure and manufacturing process, and limited power, the utility model proposes the following solutions.

Utility model content

Aiming at the technical problems that the overall structure of the speaker in the prior art is not compact enough, not light enough to be light and small enough, the structure and manufacturing process are complex, and the power is limited, a speaker with a compact overall structure, thinner, lighter and smaller size, simple structure and manufacturing process, and high power is provided. It is necessary.

A loudspeaker, which includes a magnetic circuit system, a voice coil and a centering strut, the magnetic circuit system includes a magnetic gap, the voice coil includes a voice coil lead-out line, and the centering strut includes a formed Conductive circuit on its surface, one end of the voice coil is accommodated in the magnetic gap, and the other end is fixed to the centering strut, the lead wire of the voice coil corresponds to the conductive circuit of the centering strut connect.

As a further improvement of the above speaker, the conductive circuit is a metal plating layer formed on the surface of the damper through an electroplating process.

As a further improvement of the above speaker, the voice coil and the damper are arranged in an integral structure.

As a further improvement of the above-mentioned loudspeaker, the surface of the damper is further provided with a plurality of welding spots, and the voice coil and the damper are welded together at the positions of the welding spots.

As a further improvement of the above speaker, the damper is a hollow ring structure.

As a further improvement of the above speaker, the speaker further includes a dome, and the dome is correspondingly arranged in the hollow area of the damper.

As a further improvement of the aforementioned loudspeaker, the dome is bonded to the inner edge of the damper correspondingly.

As a further improvement of the above speaker, the speaker also includes a diaphragm, the diaphragm is stacked with the strut, and the outer edge of the diaphragm corresponds to the outer edge of the strut bonding.

As a further improvement of the above speaker, the speaker also includes a dome and a diaphragm, one end of the voice coil is fixed on the surface of the strut, the dome, the diaphragm and the voice coil It is supported and fixed by the centering piece to form an integral body.

As a further improvement of the above speaker, the speaker further includes a frame with a storage space, the magnetic circuit system is stored in the lower part of the storage space, and the vibration system is partially stored in the upper part of the storage space.

Compared with the prior art, the voice coil of the loudspeaker of the present invention is electrically connected to the centering strut correspondingly, so that the voice coil is realized through the lead wire of the voice coil and the conductive circuit on the surface of the centering strut. It is electrically connected with the external speaker drive circuit board to meet the transmission of electro-acoustic signals, avoiding the separate lead-out of the voice coil lead-out line to the external drive circuit board, saving the space occupied by the voice-coil lead-out line, making the overall structure of the speaker more compact and making reasonable use of space , which is conducive to the realization of the thin, light and miniaturized development of the speaker. At the same time, the structure is simplified, making the whole manufacturing process and assembly process more convenient. More importantly, the lead wire of the voice coil can realize electrical signal transmission through the strut, which effectively solves the problem of current limitation and makes it possible to increase the overall power of the loudspeaker.

Description of drawings

Fig. 1 is a side exploded schematic diagram of a loudspeaker related to the utility model.

Fig. 2 is a three-dimensional exploded schematic diagram of a preferred embodiment of the loudspeaker of the present invention.

Fig. 3 is a side sectional view of the assembled speaker shown in Fig. 2 .

Fig. 4 is another perspective view of the damper shown in Fig. 2 .

Detailed ways

The loudspeaker structure of the present invention will be described below in conjunction with the accompanying drawings.

Please refer to FIG. 2 and FIG. 3 at the same time, wherein FIG. 2 is an exploded perspective view of a preferred embodiment of the loudspeaker of the present invention, and FIG. 3 is a side sectional view of the assembled loudspeaker shown in FIG. 2 . The speaker 2 includes a frame 21 , a magnetic circuit system 23 , a voice coil 25 and a vibration system 27 . The frame 21 accommodates the magnetic circuit system 23 , the voice coil 25 and the vibration system 27 therein, and simultaneously supports the magnetic circuit system 23 and the vibration system 27 .

The frame 21 is a frame made of plastic with a receiving space (not shown). The accommodating space is an accommodating space with openings at both ends. A step 211 is arranged in the receiving space of the frame 21 , and a plurality of card slots 213 are arranged on the step 211 . The step 211 divides the containing space into two parts, wherein the lower part corresponds to the magnetic circuit system 23 , and the upper part corresponds to the part containing the voice coil 25 and the vibration system 27 .

The magnetic circuit system 23 includes a magnetic bowl 231 , a magnet 233 and a pole piece 235 . The magnetic bowl 231 encloses an open accommodation space (not shown), and the open end of the magnetic bowl 231 is provided with a plurality of fixing pins 232, and the plurality of fixing pins 232 correspond to the number of steps 211 respectively. a card slot 213. The magnetic cup 231 is correspondingly nested and accommodated in the lower portion of the receiving space of the frame 21 , and the plurality of fixing pins 232 are correspondingly engaged in the plurality of locking grooves 213 . The magnet 233 and the pole piece 235 are superimposed and are correspondingly accommodated in the accommodation space of the magnetic bowl 231 , and the magnet 233 is sandwiched between the magnetic bowl 231 and the pole piece 235 . At the same time, a columnar gap is set between the inner surface of the magnetic cup 231 and the side surface of the magnet 233 , and the gap is the magnetic gap 230 of the magnetic circuit system 23 .

The voice coil 25 is an annular coil, which can correspondingly generate a magnetic field after being energized. The voice coil 25 includes a voice coil lead wire 251 .

The vibration system 27 includes a strut 271 , a dome 273 and a diaphragm 275 . The damper 271 is an elastic plate bracket. The spider 271 has a hollow ring shape as a whole, and the ring part is provided with a hollow pattern to ensure air flow. The outer contour of the damper 271 corresponds to the edge of the step 211 of the bracket 21 . Please also refer to FIG. 4 , which is a perspective view of the damper 271 shown in FIG. 2 from another angle. The damper 271 is made of a non-conductive material as a base material, and then a conductive circuit 2711 and a plurality of solder joints 2713 are formed on the surface of the base material. The conductive circuit 2711 can be formed on the surface of the substrate by electroplating process, and the thickness and width of the conductive circuit 2711 are designed according to the required current of the voice coil 25 . The plurality of welding spots 2713 are arranged at intervals on a circular curved track, and the circular curved track corresponds to the circular contour of the voice coil 25 . The voice coil 25 is arranged adjacent to the strut 271 with a conductive circuit 2711 and a plurality of solder joints 2713, which are fixed together with the multiple solder joints 2713 on the surface of the damper 271 by welding, so that The damper 271 is integrally formed with the voice coil 25 . The voice coil lead wires 251 of the voice coil 25 are correspondingly electrically connected by welding.

The dome 273 is correspondingly arranged in the hollow area of the damper 271, and the outer contour edge of the dome 273 is connected with the annular inner edge of the damper 271, and is bonded by an adhesive. connected together.

The diaphragm 275 is also a hollow ring structure, the outer edge of the ring structure corresponds to the outer contour of the damper 271, and the ring structure of the diaphragm 275 is bonded by an adhesive together. The diaphragm 275 is covered with the dome 273, and the dome 273 is located in the hollow area of the diaphragm 275. The two cooperate to form a cover body, and at the same time, the centering body bonded together with the dome 273 The support piece 271 is fixedly supported to form an integrated vibration system 27 .

The assembly process of the speaker 2 is as follows:

Firstly, the magnet 233 and the pole piece 235 are stacked and accommodated in the accommodation space of the magnetic bowl 231, and an annular magnetic gap is formed between the side surface of the magnet 233 and the inner wall of the magnetic bowl 231 230.

Secondly, the inner edge of the damper 271 is bonded together with the outer edge of the dome 273 correspondingly, and its outer edge is bonded together with the diaphragm 275, the damper 271 corresponds to fixing and supporting the vibration system 27 in which the dome 273 and the diaphragm 275 are integrated. A plurality of welding spots 2713 and a conductive circuit 2711 are provided on the side surface of the centering strut 271 away from the diaphragm 271 .

Next, one end of the voice coil 25 is correspondingly welded to a plurality of solder joints 2713 of the damper 271, and the voice coil lead-out wire 251 of the voice coil 25 is connected to the conductive circuit on the surface of the damper 271. 2711 is correspondingly electrically connected, so that the voice coil 25 corresponds to the vibration system 27, and the voice coil 25 is electrically connected through the vibration system 27, so that the external speaker circuit board (not shown) passes through the vibration system 27 The conductive circuit 2711 and the voice coil lead wire 251 transmit electrical signals to the voice coil 25 .

Then, the magnetic circuit system 25 is correspondingly accommodated in the lower half of the accommodation space of the frame 21, and the other end of the voice coil 25 is correspondingly accommodated in the magnetic gap 230 of the magnetic circuit system 23, the vibration system The damper 271 of 27 is nested and engaged with the step 211 of the frame 21 .

Thus, the speaker 2 is formed, and the speaker 2 makes the voice coil 25 and the external speaker circuit board correspondingly electrically connected through the conductive circuit 2711 arranged on the surface of the centering strut 271 to realize electrical signal transmission. The speaker 2 correspondingly converts the received electrical signal into an acoustic signal for transmission.

Compared with the prior art, in this embodiment, a plurality of welding spots 2713 and conductive lines 2711 are arranged on the surface of the damper 271, so that the voice coil 25 is integrated into the vibration system 27 by welding, This makes the integration of the entire loudspeaker 2 higher and facilitates assembly. At the same time, because the vibration system 27 and the voice coil 25 form an integral body, when the speaker 2 is working, the corresponding components are fixed together, which greatly reduces the displacement of components caused by vibration or external force impact, resulting in a decline in product quality The possibility of improving product reliability.

In addition, due to the development trend of miniaturization of electronic products, effective and reasonable use of space is the prerequisite for achieving the above purpose. In the prior art, the lead wires of the voice coil need a certain amount of accommodation space, and the centering strut also needs a certain amount of vibration space. , the overall volume of the loudspeaker is large, which is not conducive to the realization of thinness and miniaturization, but the utility model directly welds the voice coil lead-out wire 251 to the conductive line 2711 of the centering strut 271, avoiding a separate space to accommodate the voice coil lead-out wire The 251 is electrically connected to the external speaker circuit board, which greatly saves space, simplifies the structure, and makes the whole more compact and thinner. The power of the speaker 2 can be increased by adjusting the line width of the conductive line 2711 to reduce its impedance.

The above are only preferred implementation examples of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. loud speaker, it comprises a magnetic circuit system, a voice coil loudspeaker voice coil and a centring disk, described magnetic circuit system comprises a magnetic gap, described voice coil loudspeaker voice coil comprises a voice coil loudspeaker voice coil lead-out wire, described voice coil loudspeaker voice coil one end is contained in the described magnetic gap, its other end is fixed in described centring disk, it is characterized in that: described centring disk comprises that one is formed at its surperficial conducting wire, the corresponding electrical connection with the conducting wire of described centring disk of described voice coil loudspeaker voice coil lead-out wire.

2. loud speaker according to claim 1 is characterized in that: described conducting wire is the coat of metal that is formed on described centring disk surface by electroplating technology.

3. loud speaker according to claim 1 is characterized in that: described voice coil loudspeaker voice coil and described centring disk are the integrative-structure setting.

4. loud speaker according to claim 3 is characterized in that: described centring disk surface also is provided with a plurality of solder joints, and described voice coil loudspeaker voice coil and described centring disk weld together in described bond pad locations.

5. loud speaker according to claim 4 is characterized in that: described centring disk is a hollow annular structure.

6. loud speaker according to claim 5 is characterized in that: described loud speaker also comprises ball top, the corresponding hollow region that is arranged on described centring disk in described ball top.

7. loud speaker according to claim 6 is characterized in that: described ball top is corresponding bonding with described centring disk inside edge.

8. loud speaker according to claim 6 is characterized in that: described loud speaker also comprises a vibrating diaphragm, and described vibrating diaphragm and described centring disk are folded to be established, and the outer ledge of described vibrating diaphragm is corresponding bonding with the outer ledge of described centring disk.

9. loud speaker according to claim 1, it is characterized in that: described loud speaker also comprises a ball top and a vibrating diaphragm, described voice coil loudspeaker voice coil one end is fixed in described centring disk surface, and described ball top, described vibrating diaphragm and described voice coil loudspeaker voice coil support by described centring disk and the fixing one that forms.

10. loud speaker according to claim 9 is characterized in that: described loud speaker also comprises the framework of a tool receiving space, and described magnetic circuit system is contained in the lower part of described receiving space, and described vibrational system partly is contained in the top of described receiving space.

Images